Carbureter.



. PEROIVAL.

W. PATTERSON & F

OARBURET APPLICATION IIUBD JULY 8,1912.

Patented Oct. 21. 1913.

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Specification of Letters rafififlt.

Application filed July 8, 1913. Serial Fe. 708,313.

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Patented st. 21, 1913;

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Be it known that we, W'XLLIAM PATTER soxand FRANK N. PERCIVAL, citlzens of the i United States, residing at Chicago, in the county of Cook and State of l'llinois, have invented a certain new and useful Improvementin Carburetors, of which the following is a specification.

This invention relates to carburetors used up'on gas engines, particularly for use upon automobiles, Where very high efiiciency is necessary.

The object of the invention is to provide such a carbureter which will more readily take up the gasolene which is to be mixed with theair than has heretofore been possible.

The invention consists in the features and combinations hereafter fully set forth and claimed.

Figure 1 is a vertical sectional. view of carbureter having the preferred form oi this invention applied thereto. Fig. 2- is a sectional detail view on the line 2--3, Fig. 1.

The numeral 10 indicates the side walls f the body portion of a carburetor to fhich this invention is applied. This car- .:-ureter is, as usual, provided with a. gasole'ne passageway 12 entering char her 18 which is in turn controlled by a valve l t operated by a float 16 movable up and down by liquid within the chamber 18 and manually movable by the lever 20 operated by the pull cord Gasolene is fed to the chamber 18 through the plug 26 and thence through the passageway 12 into the carbureter proper. The chamber 10 is also provided with the discharge opening 30 con- ;trolled by the pivot valve 32 operated by any suitable mechanism. The movement of his valve 32 is limited by the arms 36 en-v l he body of the carbureter is also supplied [gaging the stop 38 in the ordinary manner.

with an auxiliary air valve 40 controlling the admission of air through the passage way 42 to the upper part of the carburetor in the ordinary manner. This valve 40'is controlled by the spring 44 regulated by the thumb screw 46.

In the center of the lower portion of the carburetor chamber proper is screw threaded a plate carrying a perforated dome shaved member 52. which is the top of a perforated cylindrical member 54 extending downward to near the bottom otthe carburetor, as shown. The

upper end of ti troin below the lower end of the chamber 10 isclosed by a bottom plate 55 screw threaded at 56 and protected by 'a Was r Through the center of this plate so a screw threaded .5; handle or head 62 stem operated by .eking 6%. On the and protected 'ti 1 sc threaded stem 60 is any suitable means, such it, a horizontal plate 66 orations 68. This plate 66 is of a a 'roximately, but slightly less, than the t. 'ior diameter of the cylindrical mm. 54. Rotating the shaft 0 moves this plate 66 up and down Within the cylinder Inside the cylinder 54 under the dome 11d above the plate-66 is placed a sufiicient quantity of cotton or other like porous material. 70 suliicient-t-o substantially till the chamber formed between the parts just named. The upper end of the ster (a) is provided with a passageway T2 lea plate 66 up into this lllfteh rigidly secured l for instance prov ded 0- cotton 70.

On one side of the carburcter body 10 and adjacent to the dome 52 is an air intake bushing 74 held in position by a set screw 76. Bushings-like this one 74 having different size openings through their center may be provided so as to, at will, vary the amount of air passing through the bushings into contact with the dome surface 52. On the opposite side of the carbureter body 10 is another air intake passageway '(8 clo'sable by a valve under the control ofxlever 82.

In the operation of the device air is admitted through bushing '74 and passage 78 to the body of the carburetor, from which it passes through the open end 30; in so doingfl passing over and in close proximity-to the dome 59. Therush of air through the carburetor body creates, in the ordinary manner, a slight vacuum within the body of the carbureter and immediately adjacent to the dome 52., the result beingv that gasolene contained in the large area of cotton immeduv 'ately adjacent to the openings in the dome 52 is sucked by this passing air into and mixed with the passing air, with'the result th at the desired explosive mixture is formed. The various parts are so proportioned that no more liquid is drawn through the cotton than is needed. An over supply of gaselene within the dome is avoided in two ways; first. the float 16 absolutely contr the admission of gasoleue through the valve l i so as to maintain the level of the gasolcnc in the carburetor proper.

and around the bottom of the perforated dome 52 at a given fixed height and whenever the engine stops taking gasolene from the carbureter'the incoming gasolene entering the chamber 18 raises the float 16 and closes the valve 14: before there is any 0ver-.

the perforations of the dome; In actual practice these methods working together cause a perfect regulation and no overflow within t e carbureter. 'During this operation gasolene is supplied through plug 26,

chamber 18, passageway 12 into the lower portion of the -body of the carbureter, whence it flows through the opening 68 and the openings in the' cylindircal' member 54 -and through the passageway 72 into the cotton 70, which presents it to the openings in the dome shaped member 52 in'the manner described. The pressure of the cotton 70 and consequently the number and size of the openings-through it to the openings in the I dome 52 is regulated by the pressure on the cotton produced by moving the shaft 60 in and out through the packing material 64. The claims are i 1. A carbureter having a carbureting chamber provided withan entrance port and a an exhaust port for air passing through the mixing chamber, a perforated dome containing porous material located within the carbureting chamber where air passing through said ports passes in contact with the dome, means for adjust-ably compressing the po- 'rous material within the dome,'means for supplying combustible material to the porous-material within the dome in such a way that the combustible material is presented by the porous material to perforations in the dome adjacent to the air passing through the carbureting chamber, and a regulating valve controlling ,the admission of combustible material to the device adapted to maintain the level of combustible material at a selected point in the porous material asdescribed. p

i 2. A carbureter havin a carbureting chamber, in' one portion 0 which is located a perforated dome containing porous mat-erial,-there being air inlets in the walls of the carbureting chamber immediately adjacent to said dome and an exhaust port so located that air entering'the chamber passes directly from said dome and thence out of the chamber, means for adjustably compress ing the porous material within the dome, 5'

means for supplying combustible material to the porous material within the dome in such a] way that the combustible material is presented by the porous material to perforations in the dome adjacent to the above. mentioned air passageways, and a v regulating valve controlling theadmission of combustible material to the device adapted tomaintain the levelof combustible material at a selected point in the porous material, as described. I f

In witness whereof we have hereunto sub scribed our names in the presence of two witnesses. WILLIALI PATTERSON. FRANK N. PERCIVAL.

Witnesses JOSEPH F. ANDERSON,

L. F. KLEIN. 

